Znuny 7.0.3

• 2023-04-05 Fixed format of returned filename in function Kernel::System::Stats::StringAndTimestamp2Filename.
• 2023-04-05 AdminSLA: Sub-services will now be shown as invalid if SLA is set to invalid.
• 2023-04-04 Translatable buttons for AdminValidFilter. Thanks to Renée Bäcker @reneeb. PR#358
• 2023-04-03 GUI-Redesign changes - CSS, TT and JS.
• 2023-04-03 Updated Agent/Notification.html.tmpl and changed position of agent notifications.
• 2023-04-03 Fixed issue 'Ticket notifications not sent'. Fixed return value of GetTransportRecipients. #361
• 2023-03-02 Fixed handling of time zone for DateTime objects created with string in ISO 8601 format (e.g. '2017-05-09T07:00:09+0400').